Keegan, Hugh L. <br/><br/>
The mites of the Subfamily Haemogamasinae (Acari: Laelaptidae) 

 - Washington :   Smithsonian Institution,   1951. 
 - 203 p. ;   21 cm. 
 - Proccedings of the United States National Museum ;   Vol.101,Nš 3275 .